Centrica

Centrica plc is the FTSE-listed British energy and services group behind British Gas, the United Kingdom's largest household energy supplier, along with Bord Gais Energy in Ireland, Centrica Business Solutions, Centrica Energy (its wholesale power, gas and LNG trading arm) and the Hive connected-home brand. It sits across the whole value chain — upstream gas and storage at Rough, generation and battery flexibility, wholesale trading and route-to-market, retail supply to roughly ten million UK homes, and a field-service engineering business — after exiting North America with the sale of Direct Energy to NRG in January 2021 to refocus on the UK and Ireland. Its API posture is honestly closed: Britain mandated the smart-metering INFRASTRUCTURE (the licensed Smart DCC monopoly and the SMETS2 rollout) rather than a consumer data right, so Centrica has no Consumer Data Right, no Green Button and no standards-conformant consumer usage endpoint. The DESNZ non-domestic smart meter data access requirement that does bind it is discharged by a written request answered within ten working days, not by an API. Household consumers reach their own data only through the British Gas app and account login; business customers through the Energy360 DataView portal. The single publicly reachable developer surface found is the Centrica FieldOps Azure API Management developer portal — a partner field-operations platform in its development environment — and Centrica publishes no open grid or market data of its own, leaving that to NESO, Elexon and the DNOs.

Centrica publishes 1 API on the APIs.io network: Oauth2 API. Tagged areas include Energy, United Kingdom, Utilities, Electricity, and Gas.

Centrica’s developer surface includes authentication, sandbox, documentation, signup flow, API reference, engineering blog, and 24 more developer resources.

🌐 Visit website 📡 Source on GitHub

51.9/100 developing ▬ flat Agent 32/100 agent ready saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessPaid

1 APIs

Energy United Kingdom Utilities Electricity Gas Smart Metering Energy Retail Energy Markets Ireland Field Service

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 51.9/100 · developing

Contract Quality 9.6 / 19

Developer Ergonomics 7.4 / 15

Access Clarity 8.3 / 15

Operational Transparency 4.4 / 10

Contract Governance 0.4 / 9

Discoverability 5.7 / 8

Regulatory Posture 7.9 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 32/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 6 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Regulatory Posture applies to this provider. Its tags matched the Energy & Utilities regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/centrica: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 1

Individual APIs this provider publishes, each with its own machine-readable definition.

Centrica Oauth2 API

The Oauth2 API from Centrica — 1 operation(s) for oauth2.

Open Collections 1

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

Identity API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Centrica Plans

2 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Centrica Rate Limits

3 limits

RATE LIMITS

Security Posture 3

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Centrica Authentication

apiKey · 2 schemes

SECURITY

Centrica Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Centrica Vulnerability Disclosure

Hackerone · security.txt

SECURITY

Resources

Get Started 4

Portal, sign-up, and the first successful call

Sandbox

Sandbox

DeveloperPortal

DeveloperPortal

SignUp

SignUp

Login

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

X-MCPServerCandidate

WellKnown

AgentSkill

LLMsTxt

Design & Contract 4

Pagination, idempotency, versioning, errors, and events

Conformance

Conventions

Lifecycle

DataModel

Build 2

SDKs, sample code, and the tooling you integrate with

Packages

Packages

GitHubOrganization

GitHubOrganization

Access & Security 5

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

VulnerabilityDisclosure

VulnerabilityDisclosure

Security

Security

SecurityTxt

SecurityTxt

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 4

Pricing, plans, and the legal terms of use

Plans

Plans

TermsOfService

PrivacyPolicy

Company 3

The organization behind the API

Website

Website

Blog

Blog

LinkedIn

Other 1

Properties that don't map to a standard resource type

Overlay

Overlay

Source (apis.yml)

aid: centrica
url: https://raw.githubusercontent.com/api-evangelist/centrica/refs/heads/main/apis.yml
name: Centrica
kind: company
description: 'Centrica plc is the FTSE-listed British energy and services group behind British Gas, the United Kingdom''s
  largest household energy supplier, along with Bord Gais Energy in Ireland, Centrica Business Solutions, Centrica Energy
  (its wholesale power, gas and LNG trading arm) and the Hive connected-home brand. It sits across the whole value chain —
  upstream gas and storage at Rough, generation and battery flexibility, wholesale trading and route-to-market, retail supply
  to roughly ten million UK homes, and a field-service engineering business — after exiting North America with the sale of
  Direct Energy to NRG in January 2021 to refocus on the UK and Ireland. Its API posture is honestly closed: Britain mandated
  the smart-metering INFRASTRUCTURE (the licensed Smart DCC monopoly and the SMETS2 rollout) rather than a consumer data right,
  so Centrica has no Consumer Data Right, no Green Button and no standards-conformant consumer usage endpoint. The DESNZ non-domestic
  smart meter data access requirement that does bind it is discharged by a written request answered within ten working days,
  not by an API. Household consumers reach their own data only through the British Gas app and account login; business customers
  through the Energy360 DataView portal. The single publicly reachable developer surface found is the Centrica FieldOps Azure
  API Management developer portal — a partner field-operations platform in its development environment — and Centrica publishes
  no open grid or market data of its own, leaving that to NESO, Elexon and the DNOs.'
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: high
  source:
  - plans
  - authentication
  - rate-limits
  - security
  - sandbox
  generated: '2026-09-03'
  method: derived
image: https://www.britishgas.co.uk/aem6/etc/designs/britishgas/favicons/favicon-152x152.png
tags:
- Energy
- United Kingdom
- Utilities
- Electricity
- Gas
- Smart Metering
- Energy Retail
- Energy Markets
- Ireland
- Field Service
created: '2026-07-27'
modified: '2026-07-27'
specificationVersion: '0.23'
apis:
- aid: centrica:centrica-oauth2-api
  name: Centrica Oauth2 API
  description: The Oauth2 API from Centrica — 1 operation(s) for oauth2.
  humanURL: https://api-developer.dev.fieldops.centrica.com/api-details#api=identity-api
  baseURL: https://api.dev.fieldops.centrica.com/api/v1/identity
  tags:
  - Authentication
  tags_raw:
  - Oauth2
  properties:
  - type: OpenAPI
    url: openapi/centrica-oauth2-api-openapi.yml
  - type: Documentation
    url: https://api-developer.dev.fieldops.centrica.com/apis
  - type: APIReference
    url: https://api-developer.dev.fieldops.centrica.com/api-details#api=identity-api
  - type: DeveloperPortal
    url: https://api-developer.dev.fieldops.centrica.com/
  - type: Sandbox
    url: https://api-developer.dev.fieldops.centrica.com/api-details#api=identity-api
common:
- type: Overlay
  url: overlays/centrica-fieldops-identity-api-overlay.yaml
- type: X-MCPServerCandidate
  url: mcp/centrica-mcp.yml
  note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list derived
    from the published API contracts, not an existing server. The scorer already read the manifest and reported mcp_server
    correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
- type: DomainSecurity
  url: security/centrica-domain-security.yml
- type: Authentication
  url: authentication/centrica-authentication.yml
- type: VulnerabilityDisclosure
  url: security/centrica-vulnerability-disclosure.yml
- type: Security
  name: British Gas responsible disclosure policy
  url: https://www.britishgas.co.uk/global-maintenance/responsible-disclosure.html
- type: WellKnown
  url: well-known/centrica-well-known.yml
- type: SecurityTxt
  url: well-known/centrica-security.txt
- type: Conformance
  url: conformance/centrica-conformance.yml
- type: Conventions
  url: conventions/centrica-conventions.yml
- type: Lifecycle
  url: lifecycle/centrica-lifecycle.yml
- type: DataModel
  url: data-model/centrica-data-model.yml
- type: Packages
  url: packages/centrica-packages.yml
- type: Sandbox
  url: sandbox/centrica-sandbox.yml
- type: RateLimits
  url: rate-limits/centrica-rate-limits.yml
- type: Plans
  name: Centrica FieldOps APIM products, captured
  url: plans/centrica-plans.yml
- type: AgentSkill
  url: skills/_index.yml
- type: LLMsTxt
  url: llms/centrica-llms.txt
- type: Website
  url: https://www.centrica.com/
- type: Documentation
  url: https://api-developer.dev.fieldops.centrica.com/
- type: DeveloperPortal
  url: https://api-developer.dev.fieldops.centrica.com/
- type: SignUp
  url: https://api-developer.dev.fieldops.centrica.com/signup
- type: Plans
  url: https://api-developer.dev.fieldops.centrica.com/products
- type: APIReference
  url: https://api-developer.dev.fieldops.centrica.com/apis
- type: Login
  url: https://api-developer.dev.fieldops.centrica.com/signin
- type: Blog
  url: https://www.britishgas.co.uk/business/blog
- type: TermsOfService
  name: British Gas terms and conditions
  url: https://www.britishgas.co.uk/terms-and-conditions.html
- type: PrivacyPolicy
  name: British Gas privacy policy
  url: https://www.britishgas.co.uk/privacy-policy.html
- type: LinkedIn
  url: https://www.linkedin.com/company/centrica
- type: GitHubOrganization
  url: https://github.com/ConnectedHomes
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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